Laravel 4-获取在N：N关系中存在条目的记录

Question

I have some trouble with an Eloquent Query.

I Have 3 Tables:

products

• ID
• NAME

media

• ID
• FILE

product_media

• PRODUKT_ID
• MEDIA_ID

Now i am trying to an get random result set from the Product table, but only records where an media file exists.

Something like this (does not work..)

Product::orderByRaw("RAND()")->media()->wherePivot('file', '=!' , '')->take(10)->get();

Answer 1

You should use:

Product::orderByRaw("RAND()")->has('media')->take(10)->get();

It will take all products that has at least one media. I assume that you store in product_media only entries where file != ''